Designing and Building Custom Keyboards ⌨️ with Python

Programmers spend countless hours typing, yet we rarely question how keyboard design affects our comfort and productivity. Standard QWERTY layouts and one-size-fits-all hardware often contribute to strain and inefficiency. This talk explores how Python can help you design, build, and optimize your own custom keyboard; from analyzing your typing habits to generating the PCB.

We start with a brief history of keyboard design and the limitations of QWERTY, then introduce alternative layouts (ortholinear, split, and more) and explain why they can reduce strain and improve speed. Next, we use Python to make data-driven decisions: we’ll look at scripts that analyze your codebases or IDE usage to find your most-used characters and symbols, so you can place keys where they matter most for your workflow and favorite languages.

We then move on to PCB design with KidCad and GDSFactory, a Python-based tool for creating keyboard PCBs and exporting Gerber or GDS files for manufacturing. You’ll see how to arrange keys around your hand shape and generate production-ready files. After that, we cover basic assembly and programming your layout with open-source firmware. Finally, we discuss trade-offs: the benefits of a tailored setup (better posture, less finger travel, DIY satisfaction) it can also be a meaningful accessibility solution for users with special needs, limited mobility, or other conditions where standard keyboards become a uncomfortable or unusable. Some of the barriers (cost, time, learning a new layout), plus strategies for gradual adoption and practice tools.

What you will learn:

• Why keyboard layout and ergonomics matter for long-term comfort and productivity.
• How to use Python to analyze your typing patterns and inform layout choices.
• How to use KidCad or GDSFactory (Python) to design hardware and generate manufacturing files.
• How to go from design to assembly and firmware, and how to ease the transition to a new layout.

No prior experience with keyboard building or PCB design is required; just curiosity and a desire to create a custom typing experience. By the end, you’ll know how to question your current keyboard and how to start building your own with Python.